i am build an s4 na to put in my repu and i would like to just go with a stock s4 ecu so i dont have to deal with tuneing (i dont have the money).

so i was wondering what all i need to do?



im pretty sure that the ecu gets power and ground throught the body harness, but i dont know what else like tac,and fuel.



has anyone done anything like this or have any sugestions?